How wonderful for a man in prison like Paul to say, “I can do all things through Christ which strengtheneth me” (Phil. 4:13). Many have triumphed in prison through God’s grace, but still had a feeling as if they were shut out from service and chastening was come upon them. Paul’s being in prison may have been in some sense a chastening, but in his case the chastening came, to use a homely phrase, upon good stuff — upon a man with a single eye—and so it only purged away dross and made him see clearer.
J. N. Darby